I totally get what you're saying, but that's not at all what religion is. If someone is listening to voices in their head, they're not religious. They're just crazy. I know many religious people who do not "listen to voices in their head" and it's my belief that you've had terrible encounters and experiences with people claiming to be religious. But to generalize is not a good thing. I've met very sane religious people that do not do the things you say, I think it's unfair of you to make such a sweeping claim that anyone who claims to be religious is immediately a crazy person to you. That idea itself sounds crazy to me